Andrew Kyle Purtell created HBASE-25994:
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Summary: Active WAL tailing fails when WAL value compression is
enabled
Key: HBASE-25994
URL: https://issues.apache.org/jira/browse/HBASE-25994
Project: HBase
Issue Type: Bug
Affects Versions: 2.5.0
Reporter: Andrew Kyle Purtell
Assignee: Andrew Kyle Purtell
Fix For: 3.0.0-alpha-1, 2.5.0
Depending on which compression codec is used, a short read of the compressed
bytes can cause catastrophic errors that confuse the WAL reader. This problem
can manifest when the reader is actively tailing the WAL for replication. The
input stream's available() method sometimes lies so cannot be relied upon. To
avoid these issues, when WAL value compression is enabled, ensure all bytes of
the compressed value are read before submitting the payload to the
decompressor.
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